Summarise the Pros and Cons of Different Budgeting Methods

There are four different budgeting systems and everyone online swears by a different one. Trying them all wastes months you do not have. This lays out the main methods side by side, who each one suits, and where each one falls apart in practice, then gives you one recommendation for irregular income.

Summarise the main budgeting methods people actually use: the 50/30/20 rule, zero-based budgeting, envelope budgeting (digital or cash), and pay-yourself-first. For each, give a one-line description, who it suits best, and its biggest practical drawback. End with a single recommendation for someone with irregular income who has never budgeted before.